Crop Establishment Direct Seeding Part 1 Understanding the

Crop Establishment Direct Seeding Part 1: Understanding the Palay. Check System

Direct Seeding Broadcast seeding § widely used, easy and fast § manual or mechanical weeding difficult to use Row Seeding § not common as broadcasting § better control of seed rate § manual or mechanical weeding could be used

Direct Seeding Broadcast seeding § Direct wet seeding § Direct dry seeding § Modified dry direct seeding Row Seeding § Drum seeding

Broadcast seeding Direct wet seeded rice § Select a variety that is suitable for direct wet seeding. § Prepare the field thoroughly for the crop to have an initial head start over weeds. Weeds are more competitive in direct seeding since they grow simultaneously with the crop.

Broadcast seeding Direct wet seeded rice § After soaking for 24 hours and incubating for 24 -36 hours, air dry the seeds before seeding for easier broadcasting. Use a rate of 40 -80 kg/ha. § At the time of broadcasting, saturate the field but do not allow any standing water. § Flash irrigate the field 3 days after broadcasting to re-saturate the soil.

Broadcast seeding Direct wet seeded rice § Herbicides may be applied 5 -6 days after broadcasting the seeds for more effective weed control. Apply preemergence herbicide based on manufacturers for more effective weed control. § When necessary, hand -weed 20 -25 DAS to eliminate weeds that survived herbicide treatment or use postemergence herbicides.

Broadcast seeding Direct dry seeded rice § Prepare the field thoroughly. § Repair dikes during land preparation to impound water in the paddies. § Sow the seeds immediately after the final land preparation by drum seeding or broadcasting. Use 60 -80 kg/ha. Cover the seeds by harrowing.

Broadcast seeding Direct dry seeded rice § Apply herbicide immediately after a rainfall following seeding. Repeat application of the following rainfall to ensure success if the field is weedy. § Apply 1/2 of the recommended fertilizer rate 1520 DAS and the remaining 1/2 at 40 -45 DAS.

Broadcast seeding Modified Direct Dry Seeding § Prepare the land just after harvesting the dry season crop. Plow and harrow. § Let the weeds grow. Plow and harrow again.

Broadcast seeding Modified Direct Dry Seeding § Apply 10 bags organic fertilizer, 28 kg NPK during the final land preparation. § Construct furrows with a distance of 20 cm.

Broadcast seeding Modified Direct Dry Seeding § Prepare 60 -80 kg of seeds of an early- maturing and drought-resistant variety such as PSB Rc 12 and Rc 14. § Soak the seeds for 8 -12 hrs and incubate for 8 -12 hrs also.

Broadcast seeding Modified Direct Dry Seeding § Sow the seeds when a whitish growth appears at the base of the seeds. § Sow the pre- germinated seeds when the soil moisture is about 20 cm deep.

Broadcast seeding Modified Direct Dry Seeding § Pass a wooden plank diagonally across the field to cover the seeds and for seeds falling on top of the ridge to fall along the furrows.

Broadcast seeding Modified Direct Dry Seeding § Spray herbicide 1 -2 days after sowing. Be sure that the soil is moist. § Practice the same cultural practices for transplanted rice after the seeds germinate.

Direct Seeding Broadcast seeding § Direct wet seeding § Direct dry seeding § Modified dry direct seeding Row Seeding § Drum seeding

Row seeding Drum seeding 1. Puddle and level the field thoroughly. 2. Pre-germinate the seeds but do not let the roots and shoots become too long. 3. Air-dry the pre-germinated seeds in the shade for about 10 -15 minutes before seeding to facilitate separation of the seeds. Wet seeds tend to stick and this affects the metering accuracy of the machine.

Row seeding Drum seeding 4. Before seeding, drain excess water but do not let the soil surface become dry. Construct small canals along the side of the paddy to facilitate draining of water. 5. Place the seeds into the drum cylinders up to the level in which the shafting is just slightly covered. At this level, the seeds can still roll inside the cylinder when the drum rotates.

Row seeding Drum seeding 6. Adjust the seeder to the desired seeding rate (40 or 80 kg/ha). This can be adjusted by covering one line of rows in the drum cylinders with a rubber band provided on the cylinder.

Row seeding Drum seeding 7. For manually drawn seeder, position the seeder in a corner with straight levees and along the longest side of the paddy. For hand tractor drawn seeder, leave space at the sides enough for one pass (this will be seeded last at the end of every paddy).

Row seeding Drum seeding 8. Sow the seeds with drum seeder by walking at steady speed. 9. Reposition the seeder for the return pass by setting the first rows annexed to the row of the first pass (usually at 20 cm space) and continue the headlands of the field. 10. Seed filling can be done during the break of the operation at the headlands.

Row seeding Drum seeding 11. Do not irrigate the field after seeding. Flash irrigation can be done when the field is about to crack. 12. Follow the recommended procedure for pre and post emergence herbicides for direct seeding or use rotary weeder if desired at 20 -25 DAS. 13. Apply fertilizer at 10 DAS with minimal floodwater or before using the weeder to incorporate the fertilizer and ensure maximum efficiency.

Crop Establishment Direct Seeding

CREDITS Instructional presentation designer: Ms. Ev Parac Sources of technical content/reviewers of presentation: Ms. Glenn Ilar Note: Adapted from powerpoint presentations developed by: Mr. Salvador Yabes You may use, remix, tweak, For more information, visit: & build upon this presentation non-commercially. However, always use with acknowledgment. Unless otherwise stated, the names listed are Phil. Rice staffers. Produced in 2011 Text: 0920 -911 -1398